The U.S. Treasury Department building on Pennsylvania Avenue on January 24, 2017, in Washington, DC. (Paul J. Richards/AFP/Getty Images)

He was with her…until President Trump came recruiting.

Sixty-two-year-old Craig Phillips—the former BlackRock exec who is currently helping to oversee the Trump Administration’s plan to deregulate the financial services industry—was pumping thousands of dollars into Hillary Clinton’s presidential campaign, per the Wall Street Journal.

He also had designs to join her would-be White House. But when that fell through, Phillips came calling to the Trump administration. A first-time politico, he is currently a counselor to Treasury Secretary Steven Mnuchin but could be a fit for the undersecretary of domestic finance position, WSJ reported.

The Journal also notes that Phillips could play a role in the reexamination of the housing finance industry.

Though many of his former coworkers speak of his brilliant career, which spanned the likes of Kuhn Loeb & Co., Morgan Stanley, and Credit Suisse First Boston, a different picture is painted of Phillips’ management style. Per the Journal, “Former colleagues described him as … a volatile boss prone to dressing down subordinates with expletive-laced tongue-lashings.”